... of our patented product.The antithrust bearing on the four ends of cross shaft sharply prolong the service life ... maintain.1.It is wildly used in Large Steel Mills, Heavy-duty Machinery,Crane, Metallurgical Industry, Shipbuilding Industry, Mining Industry, ... Nuclear Power Station, Construction Machinery,Paper Machinery and other heavy machinery industry.2.ISO9001-2000 (The Production and After- ...